The Nest thermostat

The Nest is a $250 Cool thermostat, you can control your home's temperature via your smartphone, using an app to tell it what temperature to be and when. Check out the video!"Nest learns from your temperature adjustments, programs itself to keep you comfortable, and guides you to energy savings. You can control the thermostat from anywhere using a smartphone, tablet or laptop, and Nest never stops learning, even as your life and the seasons change."